tl;dr: I need to increase worker_connections on my nginx servers, but
don't want to edit the debian-provided nginx.conf due to that causing
future upgrade hassles. Is this possible?
Long version:
I've got a couple servers running a somewhat convoluted web app
deployment, with nginx at the front end. Every so often, one of the
nginx instances will lock up and start logging "768 worker_connections
are not enough" messages on every request.
After some searches and double-checking that there aren't any loops in
my nginx config, I've come to the conclusion that 768 is an absurdly low
default for production servers - one source said that "over 9000" is
appropriate for most sites that see significant traffic.
So I'm thinking I should probably raise it. However, when I tried
raising it from conf.d, nginx failed to start, with the error
[emerg] 25402#25402: "events" directive is not allowed here in
/etc/nginx/conf.d/mysite.conf:1
conf.d/mysite.conf contains only:
---
events {
worker_connections 10240;
# multi_accept on;
}
---
I also tried moving that config file to modules-enabled/ and it at least
gave me a different error message:
[emerg] 14914#14914: "events" directive is duplicate in /etc/nginx/nginx.conf:6
so it apparently accepted my events block, then choked on the default
one.
Is there any way to accomplish this using only new files of my own
creation, while leaving all debian-provided config files in a pristine
state?
I know I could change it directly in /etc/nginx/nginx.conf, but
a) That would potentially generate conflicts with new debian-provided
versions of nginx.conf whenever the package is upgraded
b) My site-specific config files are generated from templates, meaning
that I'd then need to keep the template in sync with any debian-
provided changes, or go outside the existing system and have to
remember to manually tweak nginx.conf every time I make a new server
or upgrade an existing one
and I would greatly prefer a one-time change which doesn't lead to
either of those ongoing maintenance concerns.
--
Dave Sherohman
